Since TYPO3 6.1, Fluid only parses arrays which are used inside ViewHelper arguments, so that an array inside normal
text is no longer converted. This change only breaks code in very rare cases, where one relied on the inner contents of
the ViewHelper being an array. For example, if one used the debug ViewHelper as follows:

<f:debug>{key1:'value1',key2:'value2'}</f:debug>

ViewHelpers which were written like this should be re-written to take the array as a ViewHelper argument: